Of course different foods, shampoos, cosmetics, or whatever can be of different qualities because they all are made up of a mixture of chemicals. even herbal suppliments can vary in quality because plants have different strains and also vary depending on where they grow. however a drug is single chemical, a single molecue, and i dont know how you can have one tramadol molecue that is of higher quality than another tramadol molecue. its purely a black and white, 0 and 1 thing, either its tramadol or its not tramadol. i honestly have never had a difference with any drug that i have tried more than one brand of, and theres been a handful. so this brand name thing with drugs facinates me.